Zircon U-Pb Geochronology Links the End-Triassic Extinction with the Central Atlantic Magmatic Province

  title={Zircon U-Pb Geochronology Links the End-Triassic Extinction with the Central Atlantic Magmatic Province},
  author={T. Blackburn and P. Olsen and S. Bowring and N. McLean and D. Kent and J. Puffer and G. McHone and E. Rasbury and M. Et-Touhami},
  pages={941 - 945}
Life Versus the Volcanoes Correlating a specific triggering event, such as an asteroid impact or massive volcanism, to mass extinction events is clouded by the difficulty in precisely timing their occurrence in the geologic record. Based on rock samples collected in North America and Morocco, Blackburn et al. (p. 941, published online 21 March) acquired accurate ages for events surrounding the mass extinction that occurred ∼201 million years ago, between the Triassic and Jurassic Periods. The… Expand
New biostratigraphic constraints show rapid emplacement of the Central Atlantic Magmatic Province (CAMP) during the end-Triassic mass extinction interval
Abstract Different lines of evidence suggest that the main trigger mechanism for the end-Triassic mass extinction was the release of volcanic and thermogenic gases during the emplacement of theExpand
Volcanism and deep-ocean acidification across the end-Triassic extinction event
Abstract The end-Triassic extinction event marks one of the “big five” mass extinction events of the Phanerozoic. The ultimate cause of the extinction is considered to be volcanic activity at theExpand
The dawn of CAMP volcanism and its bearing on the end-Triassic carbon cycle disruption
The cause-and-effect relationship between the c. 201 Ma eruption of the Central Atlantic magmatic province (CAMP) and the end-Triassic abrupt climate change and mass extinction is at present based onExpand
Mercury evidence for pulsed volcanism during the end-Triassic mass extinction
Pulsatory volcanism, and associated perturbations in the ocean–atmosphere system, likely had profound implications for the rate and magnitude of the end-Triassic mass extinction and subsequent biotic recovery. Expand
A chronostratigraphic assessment of the Moenave Formation, USA using C-isotope chemostratigraphy and detrital zircon geochronology: Implications for the terrestrial end Triassic extinction
Abstract The Late Triassic is a period of abrupt climate change associated with a disruption to the global carbon cycle usually ascribed to the emplacement of the Central Atlantic Magmatic ProvinceExpand
Rapid eruption of the Columbia River flood basalt and correlation with the mid-Miocene climate optimum
U-Pb ages show Earth’s youngest flood basalt province erupted in 750 ka starting ~16.65 Ma during Miocene global warming, indicating that the onset of flood volcanism is nearly contemporaneous with that of the MMCO. Expand
U-Pb geochronology of the Deccan Traps and relation to the end-Cretaceous mass extinction
U-Pb zircon geochronology is applied to Deccan rocks and it is shown that the main phase of eruptions initiated ~250,000 years before the Cretaceous-Paleogene boundary and that >1.1 million cubic kilometers of basalt erupted in ~750,000 Years. Expand
Chemostratigraphy Across the Triassic–Jurassic Boundary
The Triassic‐Jurassic transition (~201.5 Ma) is marked by one of the largest mass extinctions in Earth’s history. This was accompanied by significant perturbations in ocean and atmosphereExpand
Mercury anomalies and the timing of biotic recovery following the end-Triassic mass extinction
Hg isotopes display no significant mass independent fractionation within the extinction and depauperate intervals, consistent with a volcanic origin for the Hg, and indicate that significant biotic recovery did not begin until CAMP eruptions ceased. Expand
High-precision geochronology links the Ferrar large igneous province with early-Jurassic ocean anoxia and biotic crisis
Abstract Apparent synchrony between eruption/emplacement of large igneous province (LIP) magmas and mass extinction has led to the implication of magmatism as a primary trigger of global scaleExpand


Terrestrial and marine extinction at the Triassic-Jurassic boundary synchronized with major carbon-cycle perturbation: A link to initiation of massive volcanism?
Mass extinction at the Triassic-Jurassic (Tr-J) boundary occurred about the same time (200 Ma) as one of the largest volcanic eruptive events known, that which characterized the Central AtlanticExpand
A new chronology for the end-Triassic mass extinction
article i nfo The transition from the Triassic to Jurassic Period, initiating the 'Age of the dinosaurs', approximately 200 Ma, is marked by a profound mass extinction with more than 50% genus lossExpand
Correlating the end-Triassic mass extinction and flood basalt volcanism at the 100 ka level
New high-precision U/Pb geochronology from volcanic ashes shows that the Triassic-Juras- sic boundary and end-Triassic biological crisis from two independent marine stratigraphic sections correlateExpand
Compound-specific carbon isotopes from Earth’s largest flood basalt eruptions directly linked to the end-Triassic mass extinction
It is shown that carbon isotopes of leaf wax derived lipids, wood, and total organic carbon from two orbitally paced lacustrine sections interbedded with the CAMP in eastern North America show similar excursions to those seen in the mostly marine St. Audrie's Bay section in England. Expand
Astronomically tuned geomagnetic polarity timescale for the Late Triassic
Cycle stratigraphic and magnetostratigraphic analyses of a -5000-m-thick composite section obtained by scientific coring in the Newark rift basin of eastern North America provide a high-resolutionExpand
Did the Manicouagan impact trigger end-of-Triassic mass extinction?: Geology
We use U-Pb zircon dating to test whether the bolide impact that created the Manicouagan crater of Quebec also triggered mass extinction at the Triassic/Jurassic boundary. The age of the impact isExpand
Synchrony of the Central Atlantic magmatic province and the Triassic-Jurassic boundary climatic and biotic crisis
The evolution of life on Earth is marked by catastrophic extinction events, one of which occurred ca. 200 Ma at the transition from the Triassic Period to the Jurassic Period (Tr-J boundary),Expand
Latest Triassic onset of the Central Atlantic Magmatic Province (CAMP) volcanism in the Fundy Basin (Nova Scotia): New stratigraphic constraints
Abstract In this paper we investigate the stratigraphic relationship between the emplacement of the CAMP basalts and the Triassic–Jurassic (Tr–J) boundary in the Fundy Basin (Nova Scotia, Canada).Expand
Chronology of the Central Atlantic Magmatic Province: Implications for the Central Atlantic rifting processes and the Triassic–Jurassic biotic crisis
Abstract The Central Atlantic Magmatic Province (CAMP) is among the largest igneous provinces on Earth, emplaced synchronously with or just prior to the Triassic–Jurassic (T–J) boundary ca. 200 Ma.Expand
The quest for chron E23r at Partridge Island, Bay of Fundy, Canada: CAMP emplacement postdates the end-Triassic extinction event at the North American craton
The Partridge Island stratigraphic section at the Bay of Fundy, Maritime Canada, reveals a continental sedimen- tary succession with the end-Triassic mass extinction level closely followed by basaltsExpand